Features: Global GPS location, real-time tracking, show location information automatically(supports Android/IOS APP, web/WAP). It can accurately position even when the signal is weak. Location inquiry by SMS or GPRS (TCP/IP). Getting instructions and location information via SMS, queries on Google map. SOS button send out exact location for immediate rescue/action. It needs password to make and change any setup, protect your privacy. Anti-theft function, allow you to remotely lock the engine. Historical track: Can track the driving situation at any time, dynamically display the vehicle driving history, and playback the driving situation. Overspeed alarm: Set a certain speed, beyond this speed will alarm.